Have you found?
1871 RG10  2996  7  8    Bloomfield Rd, Tipton
1881 RG11  2863  7  9    2 Bloomfield Rd, Tipton
1891 RG12  2284  131  31   Gate St, Tipton
1901 RG13  2736  10  12    Beddow Buildings, New Road, Tipton
Census 1891 - 1911 doesn't include a Mary/Mary Ann . b1885 but all above are Godfreys with a "canal/canal boat" + Tipton association.
Do you have any other info re your Grandmother Mary Ann? What year was she born - was it 1885?
regards